Markets Stay Volatile: Stocks continued to struggle amid worries about corporate earnings and disappointment that the Federal Reserve didn't cut interest rates. Despite a partial recovery late in the week, the Nasdaq Composite Index ended down 5.1%, leaving it off 38% for the year and down 50% since its March 10 high. The Dow Jones Industrial Average, meanwhile, finished the week up 1.9%, leaving it off 9.3% since its Jan. 14 high and down 7.5% for the year.